/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/OnlineServicesCommon.h
void RegisterExecHandler ( const [FString](API\Runtime\Core\Containers\FString) & Name, [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [IOnlineExecHandler](API\Plugins\OnlineServicesCommon\Online\IOnlineExecHandler) > && Handler )